Which organisms are used to increase thesoil fertility ?
Which organisms are used to increase thesoil fertility ?
- A
Blue gren algae
- B
Bt-cotton
- C
Saccharomycic cereviceae
- D
All of the above
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Nitrogen fixation is
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What would happen if oxygen availability to activated sludge flocs is reduced ?
What would happen if oxygen availability to activated sludge flocs is reduced ?
- [AIIMS 2016]
Which of the following cyanobacteria can fix atmospheric nitrogen?
$I.$ Anabaena
$II.$ Oscillatoria
$III.$ Nostoc
Choose the correct option
Which of the following cyanobacteria can fix atmospheric nitrogen?
$I.$ Anabaena
$II.$ Oscillatoria
$III.$ Nostoc
Choose the correct option